I use the bag for Canon G12. The camera, spare battery and cards have enough space. Just why the front flap is vohanden, so far not yet open up to me. This tab only covers a small compartment for the spare battery, although this has a zipper. Maybe I'm still behind :-)
Otherwise 1A pocket with the ability to attach the bag to your belt and next to the Velcro Belt Mounted even an extra push button. And strap is attending yet.